INFLUENCE OF VA MYCORRHIZAE ON THE UPTAKE AND DISTRIBUTION OF HEAVY-METALS IN PLANTS

被引：47

作者：

DEHN, B

SCHUEPP, H

机构：

[1] Swiss Federal Research Station for Fruit-Growing, Viticulture and Horticulture

来源：

AGRICULTURE ECOSYSTEMS & ENVIRONMENT | 1990年 / 29卷 / 1-4期

关键词：

D O I：

10.1016/0167-8809(90)90258-F

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

Investigations with soils, containing high and low levels of zinc and cadmium, showed that mycorrhizal infection generally enhance metal uptake to the roots of lettuce plants but not to the shoots. In highly contaminated soils, metal concentration was always decreased in shoots of mycorrhizal plants while the concentration in roots was increased, when compared to non mycorrhizal plants. Metal retention in mycorrhizal root systems can be attributed to a surface complexation of heavy metals with cystein containing ligands of fungal proteins. Therefore mycorrhizal infection may enhance root/shoot barrier of the host plants for toxic heavy metals and may play a role in heavy metal resistance of the plants. © 1990.

引用

页码：79 / 83

页数：5